Class 8 Maths Worksheet: Compound Interest

Maths worksheets lesson 63: Compound interest · Set 475 · 40 sums

The method (Grow it every year): Year by year: new amount = amount × (100 + R) ÷ 100. Amount after T years = P × (1 + R/100)ᵀ; compound interest = amount − P. A value falling by R% each year: × (100 − R) ÷ 100 every year. For 2 years, CI − SI = P × R × R ÷ 10000.

1. 1.What is the difference between the compound interest and the simple interest on ₹57500 at 8% per year for 2 years (in ₹)?
2. 2.What amount will ₹5200 grow to in 2 years at 25% per year compound interest (in ₹)?
3. 3.What is the difference between the compound interest and the simple interest on ₹50900 at 10% per year for 2 years (in ₹)?
4. 4.Find the compound interest on ₹32400 at 25% per year for 1 year, compounded every year (in ₹).
5. 5.A scooter is worth ₹9600. Its value falls by 25% every year. What will it be worth after 3 years (in ₹)?
6. 6.What amount will ₹34500 grow to in 1 year at 20% per year compound interest (in ₹)?
7. 7.What amount will ₹9300 grow to in 1 year at 20% per year compound interest (in ₹)?
8. 8.What amount will ₹24000 grow to in 3 years at 15% per year compound interest (in ₹)?
9. 9.What amount will ₹20800 grow to in 2 years at 5% per year compound interest (in ₹)?
10. 10.What is the difference between the compound interest and the simple interest on ₹56100 at 20% per year for 2 years (in ₹)?
11. 11.What amount will ₹3600 grow to in 2 years at 25% per year compound interest (in ₹)?
12. 12.Find the compound interest on ₹15000 at 10% per year for 3 years, compounded every year (in ₹).
13. 13.What is the difference between the compound interest and the simple interest on ₹17500 at 8% per year for 2 years (in ₹)?
14. 14.Find the compound interest on ₹12000 at 25% per year for 2 years, compounded every year (in ₹).
15. 15.What amount will ₹14200 grow to in 1 year at 15% per year compound interest (in ₹)?
16. 16.A town has 16000 people. The population grows by 5% every year. What will the population be after 3 years?
17. 17.What amount will ₹57700 grow to in 1 year at 4% per year compound interest (in ₹)?
18. 18.What is the difference between the compound interest and the simple interest on ₹30000 at 8% per year for 2 years (in ₹)?
19. 19.What amount will ₹16000 grow to in 3 years at 5% per year compound interest (in ₹)?
20. 20.A scooter is worth ₹7700. Its value falls by 5% every year. What will it be worth after 1 year (in ₹)?
21. 21.A scooter is worth ₹32000. Its value falls by 5% every year. What will it be worth after 2 years (in ₹)?
22. 22.A town has 20000 people. The population grows by 8% every year. What will the population be after 2 years?
23. 23.What amount will ₹10000 grow to in 2 years at 12% per year compound interest (in ₹)?
24. 24.What is the difference between the compound interest and the simple interest on ₹20000 at 12% per year for 2 years (in ₹)?
25. 25.Find the compound interest on ₹44800 at 25% per year for 3 years, compounded every year (in ₹).
26. 26.What amount will ₹50800 grow to in 1 year at 25% per year compound interest (in ₹)?
27. 27.A town has 31600 people. The population grows by 25% every year. What will the population be after 2 years?
28. 28.A scooter is worth ₹34700. Its value falls by 10% every year. What will it be worth after 1 year (in ₹)?
29. 29.What amount will ₹24000 grow to in 3 years at 25% per year compound interest (in ₹)?
30. 30.Find the compound interest on ₹30800 at 20% per year for 1 year, compounded every year (in ₹).
31. 31.A town has 12300 people. The population grows by 10% every year. What will the population be after 1 year?
32. 32.Find the compound interest on ₹55100 at 12% per year for 1 year, compounded every year (in ₹).
33. 33.A town has 45000 people. The population grows by 12% every year. What will the population be after 2 years?
34. 34.Find the compound interest on ₹16000 at 15% per year for 3 years, compounded every year (in ₹).
35. 35.What amount will ₹4800 grow to in 2 years at 15% per year compound interest (in ₹)?
36. 36.Find the compound interest on ₹46700 at 15% per year for 1 year, compounded every year (in ₹).
37. 37.A town has 43200 people. The population grows by 25% every year. What will the population be after 3 years?
38. 38.Find the compound interest on ₹11000 at 10% per year for 3 years, compounded every year (in ₹).
39. 39.What is the difference between the compound interest and the simple interest on ₹12500 at 8% per year for 2 years (in ₹)?
40. 40.Find the compound interest on ₹16000 at 5% per year for 3 years, compounded every year (in ₹).

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